Amplifier Standard Unit
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| Item | Amplifier Standard Unit |
|---|---|
| Item code | |
| Description | Refract/Reflect |
| Manufacturer | Petty Geophysical |
| Circa | 1933 |
| Model | |
| Donor | Petty Collection |
| Location | The University of Texas at Austin |
| Serial number | |
| Taxonomy | GSHP024 |
Reflection - refraction seismic amplifier. This was Petty's standard until automatic volume control came into use. The unit was designed primarily for reflections but its characteristics were very flexible and it was equally suitable for refractions. (1933)
